Paper-making machine



2. Sheets-Sheet l May 2, 1.933. F. Q YBAGLEY ErAL P'APITi `MAKING MACHINE Filed March 15,1932

ma Qa N a i .FQ

Mal/"2, 1933 F. C. BAGLEY Er AL 1,906,355

PAPER MAKING MACHINE Filed March 15, 1932 2 Sheets-Sheet 2 ly turned anges 17 secured by means of the Patented May 2, 1933 UNITEDsTATEs PATENT OFFICE FREDERICK C. BAGLEY, OF AUGUSTA, A N'D FRANK P.- SILYER, 0F BUCKSPORT, MAINE,

ASSIGNO-RS T0 MAINE SEABOARI) PAPER COMPANY,- OIE BUCKSPORT, vMAIN'E, A

CORPORATION 0F MAINE PAPER-MAKING MACHINE Application led March 15, 1932. Serial No.` 598,936.

This invention vrelates to paperL-makjing machines of the Fourdrinier type and more particularly to the means whereby the pulp is discharged from the head boxor flow box 5 to the travelling wire, such mechanism being sometimes referred to as a slice. The object ofthe invention is to provide an improved construction whereby the ow of pulp' to the wire may be accurately governed to give the best resultsand preferably one providing fon making the proper adjustments while the machine is in operation so that the results of the adjustments maybe visually observed. Our invention will be well understood by reference td'the following description taken in connection with the accompanying drawings, wherein z-f Fig. 1 shows the slice in side elevation; Fig. 2 is a partial end elevation of the parts as seen from the left of Fig. 1; and

Fig. 3 is a sectional detail on the line 3-3 of Fig. 1. y

Referring to the drawings, we have there shown the head box or flow box 7 of a papermaking machine from which the pulp is discharged to the travelling wire 9 through the slice embodyin the bottom apron' 11 over .which the pulp ows, the side plates 13 which confine it laterally and the upper apron 15, the lower edge of which is forwardly curved to dene with the bottom apron 11 a narrow slot-like opening through which the pulp flows to the wire. The side plates 13 herein ha've secured thereto the two aprons and take the form of suitable castings having outwardcap screws 19 passingthrough slots 21 in the anges to the metal plates 23 bolted to the head box 7. As seen in Fig. 3, suitable acking 25 may be interposed between the anges 17 andthe plates 23.

The bottom apron 11 may be bolted as shown to the side plates. The front apron 15 comprises essentially a thin brass plate bolted to the side platesthrough'the elon- 27 which maybe suitably reinforced as, for

as shown in Fig. 1, somewhat beyond the forward end of the bottom apron 11,-yet desirably terminates somewhat to the 'rear of the center line of thebreast roll 35v over which wire 9 passes, `the'bottom apron 11 in turn being positloned as nearly tangent to the uppermost point of this breast roll as is prac- -gated diagonal slots 33 along the front edges of the latter. This upper apron is generally' tical in view of the size of the partsand the necessary clearances.

Since the front apron is bolted through the slots 33, it may bemoved bodily up and down as by means of the hoisting screws 37- interposed between suitable brackets 39 projecting from the side plates and the brackets 41 secured to the exterior face of the apron. In the example of the invention shown the movement is diagonal. It not only altersthel size of the opening between the upper apron and the lower apron, but moves forwardly or rearwardly, as the case may be, the leading edge of the former. The adj ustrnents in question are very small and there is sufficient play in the bolted connection and in the hoisting screw to permit, if desired, an angular movement of the front apron which will vpermit the lower edge thereof to be moved vertically without substantially altering the position of the leading' edge relative to ithe leading edge of the bottom apron 11, When the position of the forward edge of the apron is changed by the diagonal adjustment to compensate for any attendant alterationA of its vertical position, the lower edge may be flexed as a whole and we haveherein (see Fig. 2) shown connected at suitable intervals along its lower edge the rods 37 connected to the pivoted blocks 39 on arms 41 carried by a rock shaft 43 which (see Fig. 1) may be moved by means of sector 45 on the end thereof -cooperating with a worm 47 which may be turned by means of hand-wheel 49. In Fig.

l we have shown suitable means for` indicating the angular position of the rock shaft.

' In order topermit local adjustment of the i l thickness of the sheet of stock which Hows out from the slice the edge of the upper j apron may be flexed locally as well as a whole and for this purpose the rods 37 may be individually adjusted relative to the blocks 39 by means of suitable nuts 51 threaded thereon.

The means for flexing, whether as a whole or locally, the lower Vedge of the upper apron is carried as a whole by said apron to move therewith independently of relatively fixed parts of the machine, it being here shown as carried by a shelf-like structure 53 secured to the exterior forward face of said upper apron. f

We also provide means whereby the slice may be positionedas a whole, for instance, properly to locate the lower apron 11 without disturbing its relation -to the other parts. We have already explained that the cap screws 19 pass through slots. in the flanges 21 of the side plates so that when the are slacked off the side plates can be moved relatively to the head box 7. To eect this movement and also to provide for angular adjustment of the lowerplate the slice may be supported by the I beam 55 extending beneath the lower apron 11 and cooperating at suitable intervals transversely of the machine (see F ig. 2) withsupports 57 with which it is engaged by means of the adjust.- ing screws 59 passing through either flange of the I beam to engage the supports. By turning these screws the slice as a whole may be raised, levelled transversely or, by manipulation of the bolts through one flange differentially as regards those on vthe'other, angularly positioned.

In the drawings we have shown the bottom apron 11 as parallel to the wire 9, which we consider the most desirable arrangement.

In Fig. 1 we show at 61 a distributor roll operating within the slice.

It will be seenthat the means for properly positioning the slice and its elements, whether at 59, 37, 49 or 51, are all exteriorly exposed convenient for manipulation and are independent of other parts of the machine. The arrangement is such that any desired changes can be effected while the machine is in operation and their effect thus observed. The appearance of the sheet on the wire will to the skilled eye indicate whether the pulp is being properly supplied thereto. For instance, considering the width of the slot through which the discharge is made, although the lower edge of the upper' apron bp positioned by most careful measurements, irregularities may appear which may be readily observed in the sheet on the wire by its relative wetness and which will require correction by local flexing of the edge of lthe apron as by means of the adjustments at'51.

We yarey aware that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and we therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive; reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

We claim:

1. In combination with the pulp head-box chine, the means for discharging pulp fromA 'the box to the wire comprising as a unitary structure a bottom apron over which the pulp flows, side plates and a top apron received between them and means accessible from the exterior for bodily vertically and angularly adjusting said discharge means as a unit.

3. In combination with the pulp head-box and travelling wire of a paper-making machine, the means for'discharging pulp from the box to the wire comprising as a unitary structure a bottom apron over which the pulp flows, side plates and a top apron received between them having a forwardly projecting lip and having means accessible from the exterior for adjusting the'top apron relatively to the other parts, and means accessible from the exterior for bodily vertically adjusting said discharge means as a unit- 4. In combination with the pulp head-box and travelling wire of a paper-making maj chine, the means for discharging pulp from the box to the wire comprising as a unitary structure a bottom apron over which the pulp flows, side plates and a top apron received between them having a forwardly projecting lip and having means accessible from the exterior for adjusting the top apron relatively to the other parts, said top apron carrying means whereby its lower edge may be exed, and means accessible from the exterior for bodily vertically adjusting said discharge means as a unit.

5. In combination with the pulp heady-box and travelling wire of a paper-making machine, the means for discharging pulp from the box to the wire comprising the lower apron, side plates and upper apron diagonally disposed and having its lower end projecting forwardly to define in cooperation with the forward end of the lower apron a discharge opening to the wire, said top'- apron being movable bodily in said diagonal direction to advance its leading edge.

6. In combination with the pulp head-box and travelling wire of a paper-making maraise and lower said leading edge...

chine, the means for discharging pulp from the box to the wire comprising the lower apron, side plates and upper lapron diagonally disposed and having its lower end projecting forwardly to define in cooperation withthe forward end of the. lower apron a discharge opening to the wire, said top apron b0- ing movable bodily in said diagonal direction to advance its leading edge, and means for flexing the lower` end of the apron to l 7. Iii-'combination with the ypulp head-box and travelingwire of apapermakingzmachine, the means for discharging pulp from .the box tothe wire comprising the lower apron side plates and upper apron having its lower end forwardly directedto dene in .cooperation with the lower apron a slot- 'like opening through which the pulp passes,

- lower apron disposed approximately tangent to the breast ro'll, its edge lying rearwardly of the center thereof, side plates and an upper apron having its lower portion forwardly directed to define with the lower apron a slot-like opening through which the pulp passes, the` lower edge projecting forwardly of the edge of the lower apron but terminating rearwardly of the center ofthe breast roll.v Y t t 9. I n combination with the pulp head-box and travelling wire of a paper-making machine, the means for discharging pulp from the box to the wire comprising, the lower apron, side plates and upper a ron diagonl ally disposed in a downwar y and forwardly sloping direction and having its Vlower end projectin forwardly to define in cooperation with t e forward end of the lower apron a discharge opening to the wire,

' said top apron being movable bodily in saidv diagonal direction to advance its leading edge, and tensioning means extending 1n a downwardly and rearwardly sloping direction attached to the lowerl edge of the apron i -for effecting a compensating flexure thereof.

lO. In. combination with the pulp headl box and travelling wire of a aper-making machine, the -means for disc arging pulp from 'the box to the wirecomprising the lower apron, side plates and upper apron having its lower end projecting forwardly to define in cooperation with 'the forward end of the .lower apron a discharge opening to the' wire, and means accessible from the Aexterior for manipulating said upper apron to adjust the position of the forward edge thereof in a longitudinal direction relatively to the lower apron.`

11. In combination with -the pulp head- I box and travelling wire vof a paper-making machine,. 'the means fondischarging` pulp Y from thefbox to the wire comprising` thev lower apron, side plates and',` upper apron having its lower end projecting forwardly to define in cooperation with the forward end -of the lower apron a discharge opening to the wire, means for adjusting vertically the position of said lower apron relatively to the travelling wire, and means accessible from the exterior for manipulating saidupper apron to adjust the position of the..

forward edgethereof in a longitudinal direction relatively to the lower apron.

In testimony whereof, we have signed ourY names to this specification.

. F. C. BAGLEY.

FRANK P. SILVER. 

